Rotary explosive-motor.



PATENTED .wa-11,1903.

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APPLLOATIQN finti@ un. sa. 1903.

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No. 736.151. PATENTED AUG. 1l, 1903. A. PRIMAT.

ROTARY EXPLOSIVE MOTOR.

APP-LIoATIoN FILED JAN. 2s, 190s. No MODEL. z SHEETS-SHEET 2.

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we News PE1-ms a., Premaman. msnmcvon u c UNITED A STATESl Patented August 11,19031` PATENT OFFICE.

ALEXANDRE PRIMAT, OF PARIS, FRANCE.

SPECIFICATION forming partofV Letters Patent No. '736,1 51, dated August 11, 1903.

` Application niet Jarman-2s, 190s. senti No. 140,245. (No modem To a/ZZ wtojwbmwy concern.:

Be it known that I, ALEXANDRE .Pen/IAT, glover, of BSRue dHauteville, in the city of Paris, Republic of France, have invented Improvements Relating to Rotary Explosive-Motors, of which thefollowing is a full, clear, and exact description.

This invention relates to a rotary motor of extremely small Weight, the motive power of which may be either steam, petrol, alcohol, or illuminating-gas. The motor is characterized by a kind of ring or rim, divided by radiating partitions in such a manner as to constitute by their combination with the pistons a certain number of chambersor cylindersfour, for example.

. When this motor is intended to operate with petrol, alcohol, or gas, it maybe constructed` as a motor working with a cylinder of four phases and provided with four pistons or for two phases with two pistons.

The shaft of this motor is driven directly without shocks, and there is no dead-center.

The invention will be readily understood by reference to the accompanying drawings, `in which is illustrated, by way of example, a motor operating with a cycle of four phases and provided with four pistons and four cylinders.

In the drawings, Figure l shows the motor in front elevation. Fig. 2 is a front elevation upon the opposite side to that represented in Fig. 1. Fig. 3 is an internal view of the face corresponding to Fig. l. Fig. 4 is an internal View of the face corresponding to Fig. 2. Fig. 5 is a horizontal axial section through the motor.

Inthe various figures similar letters of reference are employed to designate like parts.V

As shown in Fig. 5, this rotary motor is constituted by two similar shells a, bolted one against the other. These shells also constitute a sort of rim, forming part of a frame b, of any suitable kind. Within this rim are situated chambers c, separated by partitions c. The chamberscreceive pistons d d2 and d3 and d4, connected in pairs by means of links e. One pair of pistons is by the intermediary of the connecting-rods e rigidly connected mounted upon the central shaftg. The displacement of one pair of pistons in one direction and of the other pair in the same direction `serves to displace the beam, which actuates a connecting-link h, articulated upon it. This connecting-link his'articulated at its other extremity upon a pin-ion t, forming arcrankdisk, and imparts to this pinion a continuous circularmovemeut. This movementistransmitted to a toothed wheel j, keyed upon the shaft g; thus furnishing the requiredreduction of speed. The shaft g is also provided Each of vunder the action of the ignition device arranged in the orifices Z. The exhaust-valves m are opened by means of a cam o, keyed upon the shaft g in such a manner that the spent gases passing through the ports controlled by the valves m may escape through the orifices m'. The cam o with this object encounters small levers p, 'articulated at q and upon which rest the rods of the pistons,

which are acted upon by springs r. In the example illustrated one of the pistons is always operative-that is to s ay, receives the force of the explosion-While Athe other piston diametrically opposite compresses the explosive mixture. Thus, for example, assuming the explosion to take place on the piston CZ', Fig. 3, the pistou d4 will compress-the explosive mixture during this time. The piston d'4 having compressed the mixture the explosion will take place and then the mixture previously sucked in by the piston d3 will be compressed, and so in succession. In the meantime the spent gases will be dischargedby the lift of the valves m under the actionof the cam o. the pistons taken separately there is, first, suction by forward displacement of the piston; second, compression of the mixture upon In a word, for each of IOO thereturn stroke of the piston; third, work upon forward displacement of the piston under the action of the explosion, and, fourth,

discharge upon the return stroke of the piston immediately before Ithe admission 0E the fresh mixture.

The motor comprises lubricators s and a Water-cooling jacket t.

The forms, details, accessories, materials, and dimensions of my novel rotary motor may obviously vary without thereby in any Way affecting the principle cf the invention'.

l claiml. A rotary explosivemotor, comprising substantially a ring divided interiorly` into duplicate chambers, each having an inlet and an exhaust for an explosive mixture, such inlet and exhaust each being controlled by a puppet-valve, a centrally-mounted shaft and a transverse beam carried thereby, duplicate pistons in each chamber connected te the beam, for driving the shaft also connected with said beam, levers en. which the rods ci the exhaust-valves rest, and a cani on the shaft for actuating said levers.

2. A rotary explosive-motor, comprising a hollow ring divided inte duplicate chambers, each having anA inlet and an exhaust for an explosive mixture, a pair of pistons in each chamber, a centrally-mounted shaft, a beam thereon, links connecting the ends of the beam with each pair of pistons, a toothed crank-disk, a toothed Wheel engaged thereby, and a link movably connecting said disk with said beam. y

3. A motor, comprising tive cylinders, pi@- tons Working therein, a Walking-beam with its ends respectively in connection with said pistons, an engine-shaft, and a driving connection between the Walking-beam and shaft,

said connection comprising intermeshed gears, one being fastened to the engine-shaft and a link connected with the walking-beam and with the other gear.

4. An engine, comprising a Walking-beam, tWo cylinder-cavities curved concentrically to the axis of movement of the Walking-beam, two pistons in each of said cylinder-cavities and lying at opposite sides ot' the Walkingbeam and having connection therewith, and means for transmitting the movement of thev Walking-beam, said means comprising a link connected with the 'Walking-beam, a gear With which the link has cranked connection and a second gear driven from the firstnamed gear.

5. An engine, comprising a Walking-beam, two cylinder-cavities curved concentrically to the axis of movement ofthe Walking-beam, two pistons in each of said cylinder-cavities and lying at opposite sides of the Walkingbeam and having connection therewith, means for transmitting the movement of the Walking-beam, an engine-shaft axially coincident to the movement of the Walking-beam and driven from said means for transmitting the movement of the walking-beam, a cam on the engine-shaft, and valves actuated by the cam.A

The foregoing specification of my improvements relating to rotary motors signed by me this 6th day of Jannary,p1903'.

ALEXANDRE PRIMAT.

Witnesses:

AUGUSTUS E. INGRAM, MAURICE. H. PIGNET. 

